Unit 6, Lesson 12
Solving Problems about Percent Increase or Decrease
Grade 7
Preparation
Lesson Narrative
This lesson is an opportunity for students to revisit percentages of and percentage change to solve word problems. Minimal scaffolding is provided, so students will need to make sense of the problems and perhaps attempt different solution pathways (MP1). Now, they can choose to use their deeper understanding of tape diagrams and writing and solving equations.
- Solve word problems leading to equations of the form $px+q=r$ or $p(x+q)=r$.
Let’s use tape diagrams, equations, and reasoning to solve problems with negatives and percents.
Required Materials
Required Preparation
Decide if students will conduct group presentations or a Gallery Walk for the last activity. If so, prepare tools for creating a visual display and about 3 sticky notes per student. If not, these materials are not necessary.